[giggle] Remove some gnulib leftovers

[Javier Jardón Cabezas <jjardon src gnome org>]

commit 9a7ea4e6b36d48511a379c3c5fc05216b0fae71a
Author: Javier Jardón <jjardon gnome org>
Date:   Fri Nov 13 14:56:21 2015 +0000

    Remove some gnulib leftovers

 Makefile.am |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 6b78d1b..01944b7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,5 +3,4 @@ ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 SUBDIRS = data libgiggle libgiggle-git plugins src po pixmaps help test
 
 EXTRA_DIST = \
-       m4/gnulib-cache.m4 \
        build-aux/config.rpath